The purposes of this research were (1) to construct a growth mindset program on improving the ability of teacher professional students to prepare projects (2) to examine the impact of the growth mindset curriculum, and (3) to examine the mental shift that occurs in students who get growth mindset instruction. Four-year education students in two classrooms were split into experimental and control groups at random. The trial phase of a teaching program's development was used, and data were gathered using research instruments including a project writing test and a mentality evaluation. In the analysis, the independent t-test and one-way ANOVA with repeated measures were utilized as statistics. The study's results showed that using a growth mindset program, the experimental group's pre-learning project writing achievements differed from post with a statistical significance of 0.01, its post-learning project writing achievements differed from the control group with a statistical significance of 0.05, and its pre-learning, post-learning, and follow-up mindset changes with mean scores that were not different from each other.